Is computational hardness the rule or the exception?

As a cryptographer, I am used to the viewpoint that computational problems are presumed hard unless proven otherwise. We cryptographers constantly come up with new hardness assumptions, and generally use the heuristic that if a problem doesn't have an obvious algorithm then it must be hard. We've had some interesting failures (see here for a recent example), but this heuristic seems … Continue reading Is computational hardness the rule or the exception?

FOCS 2015 and KARPFest80

[Forwarding an announcement by Prasad Raghavendra --Boaz] FOCS 2015 will be held at Berkeley, California on October 18–20, 2015. Registrations are open at: http://focs15.simons.berkeley.edu/registration.html The deadline for early registration is Sept 25th. KARPfest80 On Saturday October 17, the day immediately before FOCS 2015, the Simons Institute for the Theory of Computing will host a celebration … Continue reading FOCS 2015 and KARPFest80

Outreach on Fairness, Privacy and Data Analysis

A lovely interview with Cynthia Dwork in the New York Times on bias in computations. In particular, discussing our work (joint with Moritz Hardt, Toni Pitassi and Rich Zemel) on Fairness through Awareness. Our Science article, The reusable holdout: Preserving validity in adaptive data analysis (joint with Cynthia Dwork, Vitaly Feldman, Moritz Hardt, Toniann Pitassi and Aaron … Continue reading Outreach on Fairness, Privacy and Data Analysis

Sanjeev Arora on rethinking the graduate algorithms course

[Below is a guest post from Sanjeev Arora on his redesign of the traditional graduate algorithms course to be a better match for today's students. --Boaz] For the last two years I have tried new ideas in teaching algorithms at the graduate level. The course is directed at first year CS grads, but is also taken by grads … Continue reading Sanjeev Arora on rethinking the graduate algorithms course

Indistinguishability Obfuscation and Multi-linear Maps: A Brave New World – Guest Post by Ran Canetti

A bunch of us hapless cryptographers got the following boilerplate comment from the FOCS'15 PC: "Overall, submissions related to multi-linear maps and indistinguishability obfuscation were held to a somewhat higher standard. The PC expressed some concern with the recent flurry of activities pertaining to multi-linear maps and indistinguishability obfuscation, given how little we understand and … Continue reading Indistinguishability Obfuscation and Multi-linear Maps: A Brave New World – Guest Post by Ran Canetti